ASTROSAT CZTI

Data Quality Report

Orbit 07919

Creation date: 2024-06-27T15:25:32.948840
Switch to: Orbit-wise | Merged OBSID-wise
web.py, SVN revision $Rev$

Source files: Data quality report (detailed, human readable) | Data quality report (concise, machine readable)

Observation information


Basic statistics of files

Param Original file Final file
FilenamemodeM0/AS1A02_027T01_9000001084_07919cztM0_level2.evt modeM0/AS1A02_027T01_9000001084_07919cztM0_level2_quad_clean.evt
Size (bytes)597,047,04096,791,040
Size569.4 MB 92.3 MB
Events in quadrant A4,406,753582,147
Events in quadrant B4,002,380611,960
Events in quadrant C5,227,660608,550
Events in quadrant D3,913,065582,981

Level1 data integrity


Mode SS
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A01580
B01580
C01580
D01580

Mode M0
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0183473
B0172182
C0209642
D0172462

Mode M9
QuadrantBADHDUFLAGTotal packetsDiscarded packets
A0230
B0230
C0230
D0230

Data saturation


QuadrantTotal secondsSaturated secondsSaturation percentage
A78552042.597072%
B78551321.680458%
C78551511.922342%
D7855430.547422%

Noise dominated fraction

Noise dominated data is calculated using 1-second bins in cleaned event files. If a bin has >2000 counts, and if more than 50% of those come from <1% of pixels, then it is considered to be noise-dominated and hence unusable.

Quadrant # 1 sec bins Bins with >0 counts Bins with >2000 counts High rate bins dominated by noise Noise dominated (total time) Noise dominated (detector-on time) Marked lightcurve
A 10090 7857 112 112 1.11% 1.43%
B 10090 7857 31 31 0.31% 0.39%
C 10090 7857 19 19 0.19% 0.24%
D 10090 7857 14 14 0.14% 0.18%

Top noisy pixels

Top three noisy pixels from each quadrant. If the there are fewer than three noisy pixels in the level2.evt file, extra rows are filled as -1

Pixel properties Quadrant properties
Quadrant DetID PixID Counts Sigma Mean Median Sigma
A 15 239 755486 3922.23 942 921 192.4
A 8 15 10383 49.18 942 921 192.4
A 0 226 8872 41.33 942 921 192.4
B 10 16 108424 588.72 960 938 182.6
B 4 239 74651 403.74 960 938 182.6
B 0 214 35005 186.59 960 938 182.6
C 1 16 1618611 7592.4 925 929 213.1
C 13 61 6931 28.17 925 929 213.1
C 8 222 3005 9.74 925 929 213.1
D 1 52 180646 789.32 922 893 227.7
D 5 233 174323 761.56 922 893 227.7
D 7 71 38407 164.73 922 893 227.7

Detector plane histogram (DPH)

Histogram calculated using DETX and DETY for each event in the final _common_clean file

Quadrant A Quadrant B
Quadrant D Quadrant C

Count rate plots and images

Plot type Count rate plots Images
Comparison with Poisson distribution
Blue bars denote a histogram of data divided into 1 sec bins.
Red curve is a Poisson curve with rate = median count rate of data.
Quadrant-wise count rates
Data is divided into 100 sec bins
Module-wise count rates for Quadrant A
Data is divided into 100 sec bins
Module-wise count rates for Quadrant B
Data is divided into 100 sec bins
Module-wise count rates for Quadrant C
Data is divided into 100 sec bins
Module-wise count rates for Quadrant D
Data is divided into 100 sec bins

Housekeeping plots

Parameter Plot
CZT HV Monitor
D_VDD
Temperature 1
Veto HV Monitor
Veto LLD
Alpha Counter
_CPM_Rate
CZT Counter
+2.5 Volts monitor
+5 Volts monitor
_ROLL_ROT
_Roll_DEC
_Roll_RA
Veto Counter